Fixes are available
APAR status
Closed as program error.
Error description
An unmanaged .NET client application using multiplexed connections failed during the following sequence of calls: MQCONN MQOPEN MQGET MQCOMMIT MQCLOSE MQOPEN MQGET The second of these MQGET operations failed with error MQRC_MSG_HANDLE_IN_USE despite it not actually using message handles.
Local fix
test fix supplied to customer
Problem summary
**************************************************************** USERS AFFECTED: Users of WebSphere MQ .NET clients using issuing MQGET requests with a GMO version less than MQGMO_VERSION_4. Platforms affected: Windows **************************************************************** PROBLEM SUMMARY: The issue was caused by the .NET client failing to check the version of the GMO in use when determining if the .NET application was interested in message properties and wanted to use message handles. As a result, the .NET client was checking the value of MsgHandle in the GMO even in GMO versions less than MQGMO_VERSION_4, contrary to the documented behaviour. If the memory pertaining to this field in the client application happened to be not NULL, then the MQ client would think that the application wished to use message handles. This in turn would lead to incorrect message handle processing on the server.
Problem conclusion
The .NET unmanaged client was modified to ensure that the client does not register interest in message properties with the server for applications using older GMO versions (pre version 4). As such, no message property logic will take place on the server. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.0.2 -------- -------------------- Windows U200302 The latest available maintenance can be obtained from 'Websphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available, information on its planned availability can be found in 'Websphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IC59659
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-01-26
Closed date
2009-02-11
Last modified date
2009-02-11
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R700 PSY
UP
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Document Information
Modified date:
31 March 2023